Elevator apparatus.



P. H. MELANDER. ELEVATOR APPARATUS. APPLICATION rum) JAN. 16, 1909.RENEWED OUT. 25. 1909.

Patented May 31, 1910.

Witnesses ANDREW n. GRAHAM 00 PHOYO-QIHDGRAPNERS.WASNIHGYDN oApplication filed January 16, 1909, Serial No. 472,719.

PETER H. MELANDER, OF TACOMA, WASHINGTON.

ELEVATOR APPARATUS.

Specification of Letters Patent.

Patented May 31, 1910.

Renewed October 25, 1909. Serial No. 524,534.

To all whom it may concern:

Be it known that I, PETER H. MELANDER, a citizen of the United States,residing at Tacoma, in the county of Pierce and State of Washington,have invented certain new and useful Improvements in Elevator Apparatus;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters and figures ofreference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in safety elevatorapparatus and comprises various details of construction, combinationsand arrangements of parts which will be hereinafter fully described andthen specifically defined in the appended claim.

My invention is illustrated in the accompanying drawings, in whichFigure 1 is a side elevation of an elevator showing the features of myinvention as applied thereto. Fig. 2 is an enlarged detail perspectiveView of a part of the invention. Fig. 3 is a sectional view on line 3-3of Fig. 1. Fig. 4L is a detail view partially in section, and Fig. 5 isan enlarged detail view of a bracket guide member.

Reference now being had to the details of the drawings by letter, AAdesignate standards of the elevator frame having a pulley B mounted insuitable bearings on a cross-piece A, and C designates a pulleyjournaled in a bracket member C also mounted upon said cross-pieceadjacent to one end, and a cable D is fastened to an eye D upon the carD and passes over said pulleys and has a counter-balance weight Dsecured to its other end. Upon the inner face of each of said standardsof the frame are the spiral tracks E, and FF designate bracket guidemembers, each of which is forked as shown clearly in Figs. 3 and 5 ofthe drawings, and the arm of each of said bracket members is bent at anangle, as at F, and spaced apart. The inner edge of each arm of saidbracket members is recessed away as at F in order that said arms may fitabout the convexed port-ions E of the spiral or worm tracks E, as shownclearly in Fig. 3 of the drawings. Each of said bracket guide members isfastened by any suitable means, one to either side of the car adjacentto its lower end and projecting laterally straddles the projectingportion of the spiral tracks E, as shown clearly in the drawings.

Depending from the lower portion of the car is a frame H having a motorI supported thereon, the shaft I of said motor being journaled inbearings in said frame and upon each end of said shaft is a beveled gearwheel J, each of which is designed to mesh with a similar gear wheel Jfixed to the bottom of a shaft J 2 on which is a spiral worm N designedto engage the spiral grooves formed in the track E. It will be notedthat there are two of these spiral worms N one upon each side oftheelevator and mounted as shown and described. An electric currentbeing conveyed to the motor in any suitable manner, the power foroperating the motor is generated and transmitted through the worms whichare vertically disposed and, as they rotate in the grooved tracks, willcause the car to raise and lower, the car being counter-balanced by theweight which is attached to the cable at the upper end of the car.

Any suitable form of brake mechanism, not shown, may be employed forholding the motor shaft or worms from rotation, whereby the car may beheld at any desired location.

From the foregoing, it will be noted that, by the provision of anapparatus as shown and described, means is aiforded whereby allaccidents incident to the falling of elevators may be avoided and, byreason of the peculiar construction, a safe and powerful means isafforded for operating an elevator.

What I claim to be new is In combination with an elevator car, a shafthaving worm tracks thereon, vertically mounted worms carried by the carand engaging said tracks, a motor carried by the car, gear connectionsbetween the same and nally with said tracks behind said convexed saidworms, bracket guide members fixed to portions, as set forth. 10 the carand having arms, each of which is In testimony whereof I hereunto afiixmy concaved upon its inner edge, the opposite signature in the presenceof two witnesses. sides of said tracks having convexed por- PETER H.MELANDER. tions over which the concaved parts of said Vitnesses:

arms extend, each of said arms being bent J. A. Roos,

at a right angle and extending longitudi- GEO. W. FRITZ.

